Process of manufacturing dialkylbarbituric acid.



'lar l lull,

als in i' @mund Ruling lili@ G i R M: "lA'Dl, GERMANY.

LJ WJ! l* Specfczsion of Letters Patent.

:lilml lli-,minlnv S, 1904, Serial Nol 261,371. Diviiid nur! this application lml lilly 13,1906. Serlnl No. 326,0I'38i ERMAN Y, ASSIGNOR T() THE Fllill 0l"l ALKYLBAREMTUWC ACED.

Patented June 11, 190'?.

mit departing from the spirit o :my iifelition :nifl without exceeding the scopo of my claim.

munple. From tlm cyan:lielliylucelic este?, tlw clielliylnizilonn11iimwid ester /CQMNH2 (0.1mm

Mooi:

,csmici. NH/ l cow. (CuHnl-l-/ G W This :ifpplimlion is ille/:l aan division 01" my milicafiou No. 23187 l filed Ni'i'vemlwr 8,- U( 'for the purpose of claiming another wams of process coming unda-1j the gemella @Axims of said :applic-ation.

Yl'Livmg :illus fully desl'ilicd agay invention; 'mmh l claim and :lesite to secure by Qties paient isz-- v i i. The process of manueigtjming aflialyl f/ Q sesame barbituric acid, which consists in condensing tbiourea, and then converting the latter by adialkylmalonyiamid compound with thiouan oxidizing agent into diethyibarbituric rea by means of an alkaline condensing agent acid. v l I into a dialkyimalonyithiourca and'then con- In testimony Wheieof, I have hereunto 15 5 Verting the latter into a diaikyibarbituric signed my name the presence of two subacid by means of an agent substituting oXysciibing Witnesses.

gen for sulfur. l

2.. The process of manufacturing diethylbarbituric acid, which consists in condensing Witnesses: 'r a dicthylnialonaminacid ester Vith tiiioiuea JEAN GRUND, by sodium alcohciate into dietbyinialonyls CARL GRUNB.'

MAX ccNRAn. 

